Richard Guenther <[email protected]> writes: > On Mon, Nov 8, 2010 at 12:03 AM, Andi Kleen <[email protected]> wrote: >> Andreas Schwab <[email protected]> writes: >>> >>> The asm fails to mention that it modifies *regs. >> >> It has a memory clobber, that should be enough, no? > > No. A memory clobber does not cover automatic storage.
That's a separate problem. > Btw, I can't see a testcase anywhere so I just assume Andreas got > it right as usual. An asm with live inputs and outputs should never be optimized way. If 4.5.1 started doing that it's seriously broken. -Andi -- [email protected] -- Speaking for myself only.
